EP 0059393 B1 19920909 - HYPERFILTRATION MEMBRANES WITH SEPARATION LAYERS FROM MONOMOLECULAR SURFACTANT FILMS
Title (en)
HYPERFILTRATION MEMBRANES WITH SEPARATION LAYERS FROM MONOMOLECULAR SURFACTANT FILMS
Publication
Application
Priority
DE 3107527 A 19810227
Abstract (en)
[origin: US4758342A] The invention relates to a hyperfiltration membrane containing a supporting layer and a separation layer. The membrane is characterized in that the separation layer consists of a crosslinked monomolecular film of molecules, the molecules of the separation layer in the uncrosslinked state being surfactants or surfactant-like lipoids containing at least one hydrophobic chain and at least one hydrophilic group, the hydrophobic chains of these molecules being oriented mainly perpendicularly to the plan of the membrane and parallel to the diffusion direction after crosslinking and the molecules of the separation layer being crosslinked with one another through functional groups in at least one of their hydrophobic chains and/or through functional groups in at least one of their hydrophilic groups. The invention also relates to a process for the production of hyperfiltration membranes in which the surfactant molecules or the surfactant-like lipoid molecules are spread out under a certain spreading pressure or occupying an average space over the surface of an aqueous solution or at the interface between an aqueous solution and a liquid immiscible therewith, the surfactant molecules or the surfactant-like lipoid molecules are crosslinked with one another and the separation layer crosslinked in this way is applied to a supporting membrane.
IPC 1-7
IPC 8 full level
B01D 61/02 (2006.01); B01D 61/36 (2006.01); B01D 67/00 (2006.01); B32B 7/06 (2006.01); B01D 69/12 (2006.01); B01D 71/44 (2006.01); C08J 5/18 (2006.01); C08J 9/00 (2006.01)
CPC (source: EP US)
B01D 69/122 (2013.01 - EP US); B01D 71/44 (2013.01 - EP US); Y10S 264/18 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB NL SE
DOCDB simple family (publication)
EP 0059393 A2 19820908; EP 0059393 A3 19860122; EP 0059393 B1 19920909; DE 3107527 A1 19820916; DE 3280412 D1 19921015; DK 170204 B1 19950612; DK 80982 A 19820828; JP H0418886 B2 19920330; JP S57159506 A 19821001; US 4758342 A 19880719; US 4873033 A 19891010
DOCDB simple family (application)
EP 82101280 A 19820219; DE 3107527 A 19810227; DE 3280412 T 19820219; DK 80982 A 19820224; JP 3046782 A 19820225; US 20983988 A 19880622; US 59808384 A 19840409